Billy Bob Thornton's estranged daughter Amanda Brumfield has been convicted of aggravated manslaughter in the death of her friend's baby daughter, reports the Orlando Sentinel. Billy Bob Thornton, an Oscar-nominated actor best known for his roles in 'Monster's Ball' and 'Pushing Tin' no longer has contact with Amanda.The verdict was handed down to the 32-year-old last Friday (27th May 2011), where she was found guilty of manslaughter but not guilty of first-degree murder. Brumfield was convicted in the same courthouse where Casey Anthony is being tried for murder. Billy Bob's daughter, who was babysitting 1-year-old Olivia Madison Garcia in October 2008, said the child's death was an accident. She claimed Olivia had simply fallen a short distance out of a playpen. However, prosecutors said such a fall would not account for a fracture found on the girl's skull, nor for the bleeding and swelling of the brain. Brumfield is scheduled to return to court for sentencing in July 2011.Despite his numerous award-winning performances, Billy Bob Thornton is perhaps best known for his short-lived marriage to Angelina Jolie. The couple, who were noted for their often bizarre displays of affection, divorced in 2003.